Scientists have a new word for birds stealing animal hair

Species that engage in ‘kleptotrichy’ may use their loot to deter predators

titmouse bird plucking fur from a fox

This black-crested titmouse (Baeolophus atricristatus) was caught on video in Texas plucking hair from a sleeping fox to build a nest. Scientists now have a name for this brazen behavior: kleptotrichy.

Texas Backyard Wildlife

Some tiny birds take bold risks to gather a beakful of hair for their nests.